Machine for facing valves or other like purposes.



No'. 763,642. PATENTED JUNE z8, 1904.

F. L. SMITH.

MACHINE FOR FAGING 4VALVES OR OTHER LIKE PURPOSES.

APPLICATION FILED APR. 13. 1903. N0 MODEL. 2 SHEETSSHEET"1.

a n" n Vbzfecwec yIATEN'IED JUNE 28, 1904.

I. L. SMITH. MACHINE EUR FAGING VALVES' 0R OTHER LIKE PURPOSES.

APPLICATION FILED APB.. 13.. 1903.

2 SHEETS-SHEET 2.

N0 MODEL.

UNITED STATES Patent-ed J une 28, 1904.

PATENT OFFICE.

FRANK L. SMITH, OF CHICAGO, ILLINOIS, ASSIGNOR OF ONE-HALF TO ALVA C.RICKSECKER, OF CHICAGO, ILLINOIS.

MACHINE FOR FACING VALVES OR OTHER LIKE PURPOSES.

. SPECIFICATION forming part of Letters Patent No. 763,642, dated June28, 1904.

Application file.. April 13, 1903. Serial No. 152,344. (No model.)

T0 all whom/ it may concern:

Be it known that I, FRANK L. SMITH, a citizen of the United States,residing at No. 5733 Union avenue, in the city of Chicago, in the county,of Cook and State of Illinois, have invented new and usefulImprovements in Machines for Facing Valves or other Like Purposes, ofwhich the following is a specification, reference being had to theaccompanying drawings, forming a part thereof. This invention isdesigned to provide an improved machine adapted for truing or facing upvalves or valve-disks for both iiat and globe valves and for doing otherwork of similar mechanical nature.

It consists in the features of construction which are set out in theclaims.

In the drawings, Figure 1 is a side elevation of my improved machineadjusted for facing up a gate-valve or other device requiring a flatannular face. Fig. 2 is a plan view of the rotary table and adjacentparts, the tool-holder stem being cut away and shown in horizontalcross-section at the plane of the securing-bolt. Fig. 3 is a detailsection at the line 3 3 on Fig'. 2. Fig. 4 is a detail section of thegrippingjaw at the line 4 4 on Fig. 2. Fig. 5 is a similar detailsection at the line 5 5 on Fig. 2.V

Fig. 6 is a detail axial section of the operatingshaft bearing. Fig. 7is a partly-sectional side elevation of the machine as assembled fordressing or truing up a globe-valve or other device requiringacylindrical or conical face, the bearing of the tool-holder being shownin vertical section, corresponding section shown in Fig. 3.

My machine comprises a base'- frame 4or bracket 1, which is preferablyadapted to be clamped in abeneh-vise and has for that purpose arectangular foot 2. This frame comprises an upright post 3, in which forthe purpose of dressing od gate-valves or other devices having like flatannular faces there is mounted so as to rotate about a vertical axis acircular table 4, provided with gripping-jaws 5 5 5 5, hereinafterdescribed, for holding the work. In a horizontal arm 6 of the base-framethere is journaled a shaft 7, which extends past the end of the spindleor shaft of the table 4 under the same and is adapted to have secured toit an extension 8, which is journaled in a bracket-arm 9, adjustablysecured on the horizontal arm 9 of the base-frame, said extension havingfeathered on it, so as to be adjustable longitudinally with respect toit, but rotating therewith, a friction-pulley 10, which operatesfrictionally against the under side of the table 4 to rotate the latterwhen the shaft is rotated, for which purpose the shaft is provided witha crank-handleA 1 1. The shaft is stopped against endwise movement inits bearings by having the outer bearing 12 formed as a bushing adaptedto be screwed into the end of the horizontal arm 6, said bushing beinglodged on the shaft before it is inserted and stopped between a collar13 and the hub of the crank 11. rlhe friction-pulley 10 is adjustable bysliding on the extension 8 of the shaft7 `and is retained non-rotatablywith respect thereto and secured in adjusted position by means of theset-screw 14, which Ytakes into a longitudinal groove 15 on the saidextension, and it will be understood that by changing the position ofthe friction-pulley on the shaft the speed of rotation of the'tablederivable from a given speed of rotation of the crankmay bevariedaccording to the demands of the work.

On the horizontal arm 6 there is clamped rigidly, with capacity foradjustment thereon, a vertical bracket 16, adapted for holding a tool-carrier, with its supports suitable for carrying a tool to overhang thetable and operate upon the work which may be mounted thereon asl thetable rotates. Such tool-carrier and supports I have shown in a familiarexterior form of such device, the particular construction of the samebeing no part of the present invention. It should comprise, asillustrated, a bracket-piece 17, adapted to be secured with range ofvertical adjustment on the bracket-arm 16, as by bolt taking through aslot in the bracket-piece into the web of the bracket-arm, asillustrated, and pivotally mounted on this bracket-piece the tool-holdersleeve or barrel 18, in which the tool-stem and tool are mounted, withthe usual means for advancing the tool longitudinally with respect tothe sleeve by rotation of the handle 19 at the rear upper end of thesleeve. The tool-point is shown at 20, and interiorly this device may beconstructed in any familiar manner adapted to accomplishthe movementsindicated.

The specific construction of the pivotal connection of the table withthe upright post of the base-frame, which is illustrated in thedrawings, is that a bushing-sleeve 21 is formed with a cylindricalbearing terminating in a tapering seat at the lower end for the spindle22 of the table, which is correspondingly shaped and which has athreaded terminal 23 extending out through the lower end of the sleeveand there receiving a washer oi' wearing-plate 211, and astop-nut 25 andlock -nut 26 below the wearing plate, by which the wearing-plate may beset up against the lower end of the bushing-sleeve, so as to permit easyrotation of the spindle in the sleeve without endwise play. Thebearingsleeve thus mounted on -the spindle is then screwed down into theupper end of the post, which is apertured and threaded for the purpose,and when properly adjusted is secured against displacement by aset-screw 25.

rIhe specific construction of the grippingjaws of the rotary table 4requires description. They comprise a principal block 26, having at thelower end a rib entering one of the radial slots 27 in the table, towhich they are adapted to be bound by a bolt 28, having a rectangularhead 29 adapted to engage in the undercut channels 30 of the table. Theblock is interiorly chambered to permit the bolt to pass up through itand emerge at the upper end, where it is provided with a nut for lockingit. Intermediate the ends the bolt is rifted and spread to form anelongated eye 31, through which the jaw adjusting holt 32 extends. Theblock is apertured from theinner side to accommodate the gripping-jaw33, adapted to be entered from that side. The jaw-adjusting bolt 82 isdesigned to be entered from the same side through said cavity andprotruded at the back, being stopped by a shoulder 34 and exteriorlyprovided with a stopnut 35, screwed up to a shoulder on the bolt, sothat it is substantially jou rnaled and stopped against endwise movementin the block. The jaw 36, having its forward face serrated forengagement with the work, has a threaded aperture leading in from theback toward said face to receive the adjusting-bolt by which the jaw isdrawn into its cavity and forced out to engage the work as required. Toone side of the jaw there is pivoted a gage-hook 37, adapted to bethrown up to a position at which its under face 38 stands in a plane atright angles to the axis of the table. In this position it overhangs thespace between the four jaws in which the work is to be located andwithin which is to stand the annular face which is to be dressed. Inmounting the work on the table the several jaws will be drawn backsuiiiciently to admit the work between them, and the latter will then becentered on the table-27. e., located with the center of the annularface to be dressed coincident with the axis of the table. For thispurpose the table is ruled with concentric circles, as seen at 38, sothat advantage may be taken of the eircumferential outline of the workto locate the same. The jaws being now broughtup into contact with thework on all sides, the latter is lifted or blocked up until it touchesthe under faces of all four of the gage-hooks, and in that position thejaws are tightened to grip it, thus holding it not only centrally, asorigii nally placed, but with its annular face which is to be dressedlocated at a plane at right angles to the axis of rotation, so that whenthe table rotates the tool being adjusted to proper position willpreserve the true plane in refinishing the surface.

When this machine is to be employed for dressing globe-valves or otherforms having cylindrical, conical, or spherical surfaces, the table isremoved from the post of the baseframe, and in the position occupied bythe bushing-sleeve 21 there is secured by screwing into the post andfastening with the setnut and with the central bolt 39 a block 40,having a channel L11, adapted to afford lodgment and guidance for thebracket-piece 17, which is mounted and secured therein, so that thetool-holder may be adjusted to overhang the axis of the shaft 7. rIheextension 8 being detached, a chuck 42, of any usual construction, ismounted in lieu thereof in the end of the shaft 7, and in the bearing ofthe removed shaft in the bracket 9 there may be mounted a center-point43. The valve to be dressed being held in the chuck, and, if necessary,centered by the center-point, is rotated directly by rotation of theshaft 7, while the tool-holder, adjusted to carry the tool in thedirection of taper of the valve, guides the tool, which may be advancedfor refacing the valve.

1. In a machine for the purpose indicated, in combination with astandard or base-frame, a horizontal table rotatably mounted on thestandard; a horizontal shaft and a frictionwheel thereon bearingon theunder side of the table for rotating the latter, and atool-holder adjustably mounted on the standard overhanging the table.

2. In a machine for the purpose indicated, in

combination with a base-frame or standard, a

table pivoted at its center on the standard for rotation; a tool-holderadjustably mounted on the standard extending at one side of the table; ashaft extending transversely with respect to the pivotal axis of thetable at the IOO IIO

other side of the latter, and a friction-pulley thereon bearing againstthe table for rotating it, such pulley being adjustable longitudinallywith respect to the shaft to vary the distance from the table-axis atwhich it acts thereon.

3. In a machine for the purpose indicated, a frame having ashaft-bearing and a socket at right angles thereto; a shaft in saidbearing; a bracket-arm extending in the general direction of the axis ofthe socket adapted for supporting a tool-holder at a point more remotefrom the shaft-bearing than the end of the socket, in combination with arotatable table removably mounted in the socket; a frictionpulleyadjustable longitudinally on the shaft and impinging against the tablefor rotating it, and a tool-holder removably mounted on the bracket. y

4. In a machine for the purpose indicated, a frame having ashaft-bearing and a shaft therein; a socket at right angles thereto, anda bracket-arm extending` from the shaft-bearing in the general directionof the socket, in combination with a rotatable work-holder detachablymounted in the socket; a friction-pulley adjustable longitudinally onthe shaft and impinging against the rotatable work-holder for rotatingit; a tool-holder comprising two parts angularly adjustable to eachother, one detachably supported on the bracket-arm, and the otheradapted for carrying the tool.

5. In a machine for the purpose indicated, a frame having ashaft-bearing and a shaft therein; a socket at right angles, a chuckmounted on said shaft beyond the bearing, and a toolholder mounted insaid socket comprising a block which constitutes theimmediate means ofmounting the tool-holder in the socket, and

two parts angularly adjustable to each other, means for longitudinallyadjusting one of said parts on the block, the other part being adaptcdfor carrying the tool.

6. In a machine for the purpose indicated, a frame having ashaft-bearing and a socket at right angles thereto; a shaft in saidbearing and a bracket-arm extending in the general direction of the axisof the socket adapted for supporting a tool-holder at a point moreremote from the shaft-bearing than the end of the socket, and atool-holder so mounted on said bracket, in combination with abearingsleeve inserted in the socket and made rigid therewith; awork-holder having a spindle by which it is rotatably mounted in thesleeve, the spindle being provided with a threaded terminal whichpenetrates the sleeve, and a check-nut on said threaded terminal beyondthe sleeve to retain the spindle against longitudinal displacement, anda wheel mounted on the shaft operatively engaged with the workholder forrotating the same.

7. In a machine for the purpose indicated, in combination with abase-frame or standard; a horizontal shaft journaled therein; ahorizontal table having a spindle journaled vertically in said frame; atool-holder overhanging such table, and a vertical bracket mounted onthe bearing of the horizontal shaft for adjustably carrying thetool-holder; jaws adjustable radially on the table, having each agage-hook adapted to be set overhanging the table, and having theirgage-faces all in the same plane at right angles to the table-axis;means for securing the jaws in adjusted position with respect to thecenter of the table, and means for securing the work between them, thegagehooks being adapted to be turned back out of the circle of the jawswhen thus engaged.

8. In a machine for the purpose indicated, in combination with arotatable table for carrying the work; an adjustable tool-holderoverhanging such table; independently-adjustable jaws for holding thework on the table and gages on the jaws respectively, having their underedges in the same horizontal plane at right angles to the table-axis,such gages being adapted to be displaced to clear the toolholder in therotation of the table.

9. In a machine for the purpose indicated, a frame having a horizontalshaft-bearing; a socket at right angles to such bearing, and abracket-arm for supporting a tool-holder in a position higher than thesocket.

10. In a machine for the purpose indicated, a frame having ashaft-bearing and a socket at right angles theretoand a bracket-armextending in the general direction of the axis of the socket adapted forsupporting a tool-holder at a point more remote from the shaft-bear ingthan the end of the socket.

l1. In a machine for the purpose indicated, a frame having ashaftbearing; a socket at right angles thereto, and a bracketarmextending from the shaft-bearing in the general direction of the socket,in combination with a tool-holder comprising two parts angularlyadjustable to each other, one adapted to be longitudinally adjusted onthe bracket-arm and the other adapted for carrying the tool.

In testimony whereof I have hereunto set my hand, in the presence of twoWitnesses, at Chicago, Illinois, this 31st day of March,A. D. 1903.

FRANK L. SMITH.

In presence of- CHAs. S. BURTON, FRED. G. FISCHER.

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